Image zoom in/out script

This script allows you to conveniently zoom in and out of an image. Functional in IE4+, NS6 and Opera 6+, the script does not push content around the image aside as it is zooming, unlike most similar scripts out there.

It's too bad, too. The script works nicely on the sample web site. The writer, like many developers assume that the "customer" knows everything he knows. If the writer intended to develop something only for the elite, he's missed the point of this web site.
The installation instructions are incomplete.
There is no explanation about how the script even works. Someone who already knows how it works, could write it him/herself.
Try again.